To charles noble



(No Model.)

0. G. MARSHALL.

STOVE DAMPER.

No; 248,191. Patented'Oct. 11,1881.

N, Perms Phnlo-Lilhngmphar. Washi c.

UNITED STATES PATENT OFFICE.

CHARLES G. MARSHALL, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR l TO CHARLES NOBLE 8s (30., OF SAME PLACE.

STOVE-DAMPER;

SPECIFICATION-forming part of Letters Patent- No. 248,191, dated October 11, 1881.

' Application filed August [5, 1881. (No model.)

Ioatl whom it may concern Be it known that I, CHARLES G. MARSHALL, a citizenot' the United States, and residingin Philadelphia, Pennsylvania, haveiuvented certain Improvements in Stove-Dampers, OfWllicll the following is a specification.

My invention consists of certain improve ments, fullydescribed hereinafter, inthat class of stove-dampers which are made for-adjustment to their places without disturbing the plates of the stove.

In the accompanying drawings, Figures 1, 2, and 3 are front views of the parts (detached from each other) which compose my improved stove-damper, these views being drawn to a scale of about half the actual size of the damper. Figs. 4, 5, and 6 are sectional perspective views (full size) of the same parts; Fig. 7, a section of the same parts fitted together; Fig. 8, a front view (half size) of a frame which may be used in connection with the damper, and Fig. 9 a sectional perspective view of the said frame.

In many stoves pivoted flue-dampers are required in localities which are not accessible for the adjustment of ordinary dampers without disturbing one or more of the stove-plates. Dampers, with their journals, have been made in sections, with the view of overcoming this difficulty, and it is to this class of dampers to which my invention relates.

Referring to Figs. 1, 2, and 3, A, B, and D represent the three parts which compose my improved damper, A being the damper-plate, and a one of the journals cast on and forming part of the plate, and being continued along the lower edge of the same, in the form of a rib, to the point 00. The rodDforms the other journal, as well as the handle of the damper 5 and. B is a plate by which this rod may be docked to the damper A, the latter having a projection, b, for entering a slot in the lockingplate, and the projection having a transverse hole for receiving a retaining-pin, f.

Themanner of constructing the several parts above referred to will be best observed in the sectional perspective views, Figs. 4, 5, and-6.

'There is at the lower edge of the damper A, from the point as to the end c, Fig. 1, a rib, d, and at the back of the rod D, la hronghout a portion of its length, is a recess, h, Fig. 5,

adapted to this rib, the front of the rod being rounded at z, and having ribs m a to accord with the recessed portion 12 of the retainingplate 13, s that when the three parts are fitted together they will bear the relation shown in Fig. 7 to each other, and they can be firmly maintained in this position by passing therei fits between the said shoulders, so-that there can be no longitudinal movement of the rod independent ot'the damper,on which therod can-' not turn, for the reasons above explained.

It will be understood that the precise shape shown of the parts where 'theyfit together need not be adhered to in every particular shown but in all cases the rod D must be so adapted to the damper that it cannot turn or move longitudinally thereon when the plate B has been secured to the damper.

When the parts are detached from each other the damper, with its journal a, can be introduced to its place through one of the many openings of a stove-a boiler-hole in the top plateof a cook-stove, for instance-the journal to being adjusted to the bearing prepared for it, after which the rod D is pushed through one 8 5 side of the stove, in which it has its bearing, the end of the rod being adjusted to the damper and the plate secured in its place.

In some cases I combine the above-described damper with the dampenframe H shown in Figs. 8 and 9,the frame being built in the stove.

' The lower edge, y, of this frame is made concave for the lodgment therein of the lower edge of the damper, the latter being rounded throughout, for the plate B and the portion of the rod D to which the plate is fitted are made to conform with the journals, as shown in Fig. 7, and present no interruption of the continuity of the rounded under edge of the damper. Reoesses t t are, in the present instance, made in the opposite flanged ends of the frame H, to receive the journals.

In some cases it is desirable to have two handles on the damper, one at each end, for projecting through opposite sides of the stove, in which case the journal a, forming part of the damper, should be discarded to make way for a second rod precisely like the rod D, and secured to the damper in the manner described in referring to the latter rod.

I claim as my irwention- 1. The combination of the damper-plate A, itsjournal a, the retaining-plate B, constructed for attachment to and withdrawal from the said plate A, and the rod D, constructed for confinement by and between the two plates, and forming ajournal separable from the said plate A and its journal (1', all substantially as set forth.

2. The combination of the plate A, its projection b, pierced to receive a retaining-pin,f, and the rod D, recessed to form shoulders w 20, with the plate B, having an opening adapted to the said projection I), and constructed to fit between the said shoulders of the rod, all substantially as set forth.

3. The combination of the damperplate A and itsjournal a, forming part of the said plate, andcontinued along the underedge of the same to the point as, with the rod D and the retaining-plate B, the lower edge of which, with the lower edge of the portion of the dam per-plate adjacent to the said retaining-plate, forms a rounded continuation of the rib a, the latter being a continuation of the said journal at, all. substantially as described.

4. The combination of the within-described damper, composed of the damper-plate A, retainingplate B, and rod D, with the frame H, having a lower concave edge adapted to the rounded under edge of the damper, all substantially as specified.

In testimony whereofI have signed my name to this specification in the presence of two subscribingwltnesses.

CHARLES G. MARSHALL.

Witnesses:

CHARLES W. SPARHAWK, HENRY Howson, Jr. 

